Home > Products > Doors > Door Parts > Thresholds > Plain Oak Threshold 3-1/2″ Randall Plain Oak Threshold Made with unfinished oak Measures 3-1/2″ wide Height 5/8″ 3′, or 6′ in length Model number W-50-U Length Choose an option3'6'Clear Plain Oak Threshold 3-1/2" quantity Add to cart Add to basket for Quote Purchase online at our TotalWood Store * Please select length and quantity to add to basket for quote.